The highway mileage (in mpg) for a sample of 6 different models of a car company can be found below. Find the mean and standard deviation. Round to one decimal place as needed. 19, 22, 26, 28, 29, 31 Mean = Standard Deviation = We are interested in converting the first car's highway mileage to a z score. This z score O is measured in mpg squared. O has no unit of measurement. O is measured in the square root of mpg. O is measured in mpg Submit